A long way...
Board of Supervisors History
Alameda County Timeline

We've come a long way...

On March 25, 1853, an Act of Incorporation was created and Alameda County was "born". Created from parts of Contra Costa and Santa Clara Counties, the act was signed into law by Governor Bigler on April 6, 1853.

By 1860, there were 465 residents in the county. There were salt-makers, laborers, gardeners, master sailors, fowl raisers, doctors, nurses, and even lawyers.

Today, over 1.4 million people live in Alameda County. Our diverse population and rich cultures create a special place to live and work.

Join us in celebrating our 150th birthday by exploring the county's past.